Cross flow fan t is also called as tangential blower fan, can be made with DC voltage such 12V and 24V or AC voltage such 100~240V cross flow fan, we have different size from smaller to bigger ones, for example, 30 series, 40 series and 60 series, the material of frame is metal and the material of impeller is aluminum alloy, color of frame is black, color of impeller is silver white, which are widely used in air conditioners and air purifiers, the characteristics is big air flow, high air pressure and easily fitted.